Email Authentication Health Check

Get your complete email security score with actionable recommendations

Why All Three Protocols Matter

DMARC

The policy layer. Tells receivers what to do with emails that fail SPF or DKIM checks.

SPF

The sender layer. Lists which servers are authorized to send email for your domain.

DKIM

The signature layer. Cryptographically proves emails weren't altered in transit.

Check Individual Protocols

Need more detail? Check each protocol individually for in-depth analysis.

DMARC Checker

Validate your DMARC policy

SPF Checker

Analyze DNS lookups

DKIM Checker

Verify key strength

Learn About Email Authentication

Google & Yahoo Requirements Explained

What bulk senders need to know

Do I Need DMARC If I'm Not a Bulk Sender?

Why every domain needs protection

The Hidden Cost of Weak DMARC

What p=none is really costing you

Email Authentication for Marketing Teams

Why marketers should care about DMARC

Bulk Sender Requirements Guide

Complete compliance checklist

PCI DSS 4.0 DMARC Compliance

Meet payment industry requirements
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